EP 0225450 B1 19920122 - PROCESS FOR THE PREPARATION OF MADDRELL SALT
Title (en)
PROCESS FOR THE PREPARATION OF MADDRELL SALT
Publication
Application
Priority
DE 3543394 A 19851207
Abstract (en)
[origin: US4780293A] The invention provides a process for the production of Maddrell's salt, wherein solid sodium dihydrogen phosphate and/or disodium dihydrogen pyrophosphate, containing catalytic amounts of an acid or of an acid-generating compound statistically distributed therein, is brought to condensation at an elevated temperature.
IPC 1-7
IPC 8 full level
C01B 25/39 (2006.01); C01B 25/445 (2006.01)
CPC (source: EP US)
C01B 25/445 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0225450 A2 19870616; EP 0225450 A3 19890208; EP 0225450 B1 19920122; AT E71921 T1 19920215; CA 1276429 C 19901120; DE 3543394 A1 19870611; DE 3543394 C2 19880616; DE 3683608 D1 19920305; ES 2032743 T3 19930301; JP H0469564 B2 19921106; JP S62216909 A 19870924; PT 83878 A 19870101; PT 83878 B 19890117; US 4780293 A 19881025
DOCDB simple family (application)
EP 86114099 A 19861011; AT 86114099 T 19861011; CA 524699 A 19861205; DE 3543394 A 19851207; DE 3683608 T 19861011; ES 86114099 T 19861011; JP 28912786 A 19861205; PT 8387886 A 19861205; US 93638086 A 19861201